Mushroom Growing Calculators
Free mushroom cultivation calculators: substrate volume, spawn rate, fruiting chamber humidity, grain jar ratios, and yield estimates.
Mushroom BRF Cake Yield Calculator
Estimate fresh mushroom yield from BRF (brown rice flour) cakes by jar size and number of flushes. Get fresh weight per jar across full fruiting cycle.
Fruiting Chamber Size Calculator
Calculate fruiting chamber dimensions for mushroom growing from substrate volume and species. Returns chamber size, FAE holes, and humidity surface area.
Grain Spawn Jar Calculator
Calculate grain spawn jars from substrate volume and spawn rate. Covers rye, wheat, oat, and corn for oyster, shiitake, and gourmet mushroom cultivation.
Monotub Substrate Calculator
Calculate substrate ratios, grain spawn amount, and tub capacity for monotub mushroom cultivation. Covers CVG and manure substrates for oyster and cubensis.
Mushroom Agar Recipe Calculator
Calculate agar powder, malt extract, and nutrients for mushroom media by plate count. Covers MEA, PDA, and oatmeal agar recipes with sterilization volume.
Mushroom Growing CO2 Exchange Rate Calculator
Calculate fresh air exchange rate for optimal CO2 in a mushroom fruiting chamber. Covers oyster, shiitake, and gourmet species with ppm targets by growth stage.
Mushroom Growing Humidity Calculator
Calculate humidity requirements and misting schedule for your mushroom fruiting chamber by species. Oysters need 90-95%, shiitake prefer 80-90%.
Mushroom Growing Light Cycle Calculator
Calculate optimal daily light and dark cycle for mushroom fruiting. Covers oyster, shiitake, lion mane, and reishi with recommended hours and light intensity.
Mushroom Spawn Rate Calculator
Calculate grain or sawdust spawn amount from substrate dry weight and target spawn rate percent. Oysters typically use 5-10%, shiitake 10-15%.
Mushroom Substrate Volume Calculator
Calculate substrate volume for mushroom growing bags, trays, or buckets from container dimensions. Returns dry weight of straw, sawdust, or grain needed.
Substrate Pasteurization Calculator
Calculate substrate pasteurization time for mushroom growing by method — boiling bath, lime, or steam. Returns hold time at 160-180°F for straw and hardwood.